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So in the black box, you have 2 cables. One is the ABS sensor cable and I'm guessing the other is a brake pad wear sensor cable (not sure since I've never had a 750).

The other end of the ABS cable will screw into the rear side of the wheel, basically the opposite side of the brake disc. If the other cable is a brake pad sensor, then it will attach to the brake pad inside the caliper.

I couldnt tell untill yesterday because i replaced my cluster and what came up on my display was [ check brakes ] and [ check brake lights ]
the brakes are because of that break pad sensor wire and im not to sure about brake lights because they all work. i had a check coolant come on but i topped it off with distilled water and it went out. i have clear antifreeze in the rad does anyone know what brand antifreeze comes clear ?
QUESTION does anyone know how i can program the correct milege on my new cluster
. the car only has 90k but the new cluster reads 217k. i was told to go to the dealer with both clusters and they can program the milege into my new cluster is this true ?